单项选择题
A.8ml B.10ml C.12ml D.14ml E.16ml
A.0.15ng/ml B.0.1ng/ml C.0.25ng/ml D.0.2ng/ml E.2ng/ml
A.髂骨 B.颈椎 C.下肢骨 D.肋骨 E.胸骨
A.6~8周 B.2~4周 C.1~2周 D.8~10周 E.立即行手术
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